The strength of the Earth’s magnetic field is

Important Questions on Magnetic Materials and Terrestrial Magnetism

EASY

NDA & NA EE

IMPORTANT

Physics Crash Course NDA & NA EE>Chapter 20 - Magnetic Materials and Terrestrial Magnetism>Exercise 1>Q 8

A Jet plane is travelling west at $450$ metres per second. If the horizontal component of Earth's magnetic field is $4\times {10}^{-4}$ Tesla and angle of dip is $30°,$ Then the vertical component is

EASY

NDA & NA EE

IMPORTANT

Physics Crash Course NDA & NA EE>Chapter 20 - Magnetic Materials and Terrestrial Magnetism>Exercise 1>Q 9

Select the curve which is best for making a temporary magnet.

EASY

NDA & NA EE

IMPORTANT

Physics Crash Course NDA & NA EE>Chapter 20 - Magnetic Materials and Terrestrial Magnetism>Exercise 1>Q 10

Relative permeability of iron is $5500$. Its magnetic susceptibility is

EASY

NDA & NA EE

IMPORTANT

Physics Crash Course NDA & NA EE>Chapter 20 - Magnetic Materials and Terrestrial Magnetism>Exercise 1>Q 11

Electromagnets are made of soft iron because, soft iron has